Strap for La Grande Classique Quartz 37 Yellow

The lug width of the Longines La Grande Classique L4.766.2.11.7 is precisely 20 mm. This specification is essential when purchasing compatible straps. Measure it with a digital calliper between the two lugs at the narrowest point of the spring bar. No tolerance for error: a 19 mm or 21 mm strap will not fit correctly.

Alligator leather with vegetable tanning is the most appropriate choice for this classically-oriented timepiece. The regular grain texture and natural patina enhance the formal elegance of the case. For daily versatility, a soft-grained veal box leather offers superior comfort. Shell cordovan, rare and stratified, represents the discerning enthusiast's choice, developing an inimitable caramel patina over time.

Changing the strap requires a springbar tool to remove the lugs. Position the tool in the spring mechanism slot and apply gentle lateral pressure to release the pin. Once freed, extract the pin completely with tweezers. Repeat on the opposite lug. Insert the pins into the new strap using the reverse procedure, ensuring each pin is properly secured in its holes. If inexperienced, entrust this task to a specialised atelier to avoid case scratching.

Yes, provided they are certified 20 mm straps of verified quality. However, we recommend artisan-crafted straps in premium leather (alligator, veal, shell cordovan) rather than generic straps of questionable origin. Construction quality and finishing directly impact the overall elegance of the watch. Synthetic or poor-quality leather straps diminish the classical character of this model.

Leather strap lifespan depends on tanning method and daily wear. A quality vegetable-tanned alligator strap lasts an average of 3–5 years with regular use and minimal prolonged water exposure. Shell cordovan, being rare and stratified, can exceed 7–8 years of usable life. Veal box offers intermediate durability of 4–6 years. Climate, wearing frequency, and maintenance (periodic cleaning, quick drying if wet) significantly influence longevity. Casati Milano atelier provides an 18-month warranty on all bespoke straps, covering manufacturing defects.